| Westerly moisture transport to the middle of Himalayas revealed from the high deuterium excess |
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| 作者姓名： | TIANLide YAOTandong J.W.C.White YUWusheng WANGNinglian |
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| 作者单位： | [1]LaboratoryofIceCoreandColdRegionsEnvironment,InstituteofTibetanPlateauResearch,ChineseAcademyofSciences,Beijing100085,China; [2]InstituteofArcticandAlpineResearch,UniversityofColorado,Boulder,USA; [3]LaboratoryofIceCoreandColdRegionsEnvironment,ColdandAridRegionsEnvironmentalandEngineeringResearchInstitute,ChineseAcademyofSciences,Lanzhou730000,China [4]LaboratoryofIceCoreandColdRegionsEnvironment,ColdandAridRegionsEnvironmentalandEngineeringResearchInstitute,ChineseAcademyofSciences,Lanzhou730000,China |
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| 摘 要： | Previous studies found extremely high d-excess in both ice core and glacial melt water in Dasuopu glacier, Xixiabangma, middle of Himalayas. These values are much higher than the global average and those measured in southwest monsoon precipitation. The d-excess variation in over one year at Nyalam station will clarify this phenomenon. Studies show that the high d-excess is related to the seasonal variation of moisture transport to this region. The d-excess values are low during the southwest monsoon active periods, when moisture originated from the humid ocean surface. The d-excess values are higher in non-monsoon months, when moisture is derived from westerly transport. Winter and spring precipitation accounts for a substantial portion of the annual precipitation, resulting in higher d-excess in the yearly precipitation in the middle of Himalayas than other parts of the southern Tibetan Plateau. This finding reveals that the precipitation in the middle of Himalayas is not purely from southwest monsoon, but a large portion from the westerly transport, which is very important for ice core study in this area.
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| 关 键 词： | 喜马拉雅山 湿气 传送器 氘过剩 |
| 收稿时间： | 2004-10-08 |
Westerly moisture transport to the middle of Himalayas revealed from the high deuterium excess |
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| TIANLide YAOTandong J.W.C.White YUWusheng WANGNinglian.Westerly moisture transport to the middle of Himalayas revealed from the high deuterium excess[J].Chinese Science Bulletin,2005,50(10):1026-1030. |
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| Authors: | Lide Tian Tandong Yao White J W C Wusheng Yu Ninglian Wang |
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| Institution: | (1) Laboratory of Ice Core and Cold Regions Environment, Institute of Tibetan Plateau Research, Chinese Academy of Sciences, 100085 Beijing, China;(2) Institute of Arctic and Alpine Research, University of Colorado, Boulder, USA;(3) Laboratory of Ice Core and Cold Regions Environment, Cold and Arid Regions Environmental and Engineering Research Institute, Chinese Academy of Sciences, 730000 Lanzhou, China |
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| Abstract: | Previous studies found extremely high d-excess in both ice core and glacial melt water in Dasuopu glacier, Xixiabangma, middle of Himalayas. These values are much higher than the global average and those measured in southwest monsoon precipitation. The d-excess variation in over one year at Nyalam station will clarify this phenomenon. Studies show that the high d-excess is related to the seasonal variation of moisture transport to this region. The d-excess values are low during the southwest monsoon active periods, when moisture originated from the humid ocean surface. The d-excess values are higher in non-monsoon months, when moisture is derived from westerly transport. Winter and spring precipitation accounts for a substantial portion of the annual precipitation, resulting in higher d-excess in the yearly precipitation in the middle of Himalayas than other parts of the southern Tibetan Plateau. This finding reveals that the precipitation in the middle of Himalayas is not purely from southwest monsoon, but a large portion from the westerly transport, which is very important for ice core study in this area. |
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| Keywords: | middle of Himalayas precipitation deuterium excess ice core record |
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